CMS Energy is an American energy holding company. Founded in 1886, CMS is now a $22 billion (by market cap) energy player employing more than 8,000 people. CMS has increased its dividend for 20 consecutive years. Its 10-year dividend growth rate of 6.5% is very solid for a power utility. CMS has a fairly standard financial position for a power utility. Its long-term debt/equity ratio is 1.8, while the interest coverage ratio is over 2.